Except shounen heroes usually arent part of a military hierachry, and if they are we get scenes where theyīll either get severly punished for acting out of order or have to quit their association.
Itami just does whatever he wants and thats just dumb and unsatisfying for how unrealistic it is. Thatīs just not how any military structure works. Even a high up general couldnīt behave like Itami.